Quatf Tracker::CalculateTimeWarpMatrix(Quatf inFrom, Quatf inTo)
{
bool fromValid = inFrom.LengthSq() > 0.95f;
bool toValid = inTo.LengthSq() > 0.95f;
if (!fromValid)
{
MOJING_ERROR(g_APIlogger, "Invalid Srouce view rotate");
if (toValid)
{
inFrom = inTo;
}
else
{
inFrom = Quatf(0.0f, 0.0f, 0.0f, 1.0f); // just force identity
}
}
if (!toValid)
{
MOJING_ERROR(g_APIlogger, "Invalid Targer view rotate");
if (fromValid)
{
inTo = inFrom;
}
else
{
inTo = Quatf(0.0f, 0.0f, 0.0f, 1.0f); // just force identity
}
}
/************************************************************************
注意：
下面的代码如果写成
(inFrom * inTo.Inverted()).Inverted(),那么预测的图像方向将与运动方
向一致,这就导致了运动时的卡顿。
/************************************************************************/
// 20170731
Quatf qFix = (inFrom * inTo.Inverted())/*.Inverted()*/;
// qFix.z *= -1;
return qFix;
}
